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ARM + DSP debug with single emulator and single header

scoutu75
Intellectual 440 points
Other Parts Discussed in Thread: OMAP-L137

Hello,

I'm a bit confused on the combinations of possibilities with emulators vs. connectors vs. target board headers. My target board is physically small, I can only plan for 1 header for debug of the OMAP-L137. I think I will purchase the XDS100v2, maybe one that has a native 20-pin connector.

Is it possible to have only one on-board target header to debug both the DSP and ARM cores?

What header (14-pin, 20-pin CTI, ARM 20-pin) do I use in the target board schematics?

Will the XDS100v2 emulator need an adapter if debugging in DSP or ARM mode or can both cores be debugged simultaneously?

 

Best regards,

SC

  • 0
    Intellectual 440 points

    Hi again,

    Other possibility, which would be the most simple:

    Can I plan for the 14-pin header or 20-pin CTI header in my target schematics and do simultaneous DSP and ARM debugging with the XDS100v2 (I have CCS 4.2.3)?

    Thanks,

    SC

  • 0 in reply to scoutu75
    Prodigy 30 points

    Hello scoutu75,

    You can layout your board for the TI-14 pin JTAG connector (with RTCK, emu0 and emu1). I suggest buying the Blackhawk implementation  BH-USB-100v2D from any of the many distributors like Digikey, Mouser, Ultimate Solutions, etc. They all include a 20 pin to 14 pin adapter with the BH-USB-100v2D for the same $99 price. As far as I know only TI does not provide the adapter. The RTCK signal combined with on-chip ICEPICK logic permits proper chaining so you can access both the ARM and DSP internally correctly. It will also handle situations when part of the device is powered down without breaking the JTAG chain.

    You will need a response from someone else to determine how to work with both processors in CCS.

    Hope this helps,

    Jay

    Update: TI now recommends the compact 20pin CTI connector that is somewhat smaller than the TI 2x7 14 pin and the BH-USB-100v2D comes with the 20pinCTI compatible connection natively.

    Jay

  • 0 in reply to Jay BrownIPC
    Intellectual 440 points

    Hello Jay,

    Thanks for responding. I will go with the 20-pin CTI connector because it is slightly smaller which is a good thing for my design!

    Best regards,

    SC